
1) Pocket knife
Found on
https://www.crosswordclues.com/clue/butterfly-knife

A balisong, also known as a fan knife or butterfly knife, is a folding pocket knife with two handles counter-rotating around the tang such that, when closed, the blade is concealed within grooves in the handles. It is sometimes called a Batangas knife, after the Tagalog province of Batangas in the Philippines, where it is traditionally made. The b...
Found on
http://en.wikipedia.org/wiki/Butterfly_knife
No exact match found.